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The quality of the measures

Extensive testing and statistical work have already been done to ensure the good functioning of the items in general, and in each of the three age versions in particular, and to check whether the life domains and the items are relevant for children in varied socio-cultural regions. This has included piloting the questionnaires in various countries and languages, using large scale samples as well as focus groups and interviews with children.

In total, the questionnaires have been translated and tested in a wide range of languages including:

Afrikaans | Amharic | Arabic | Ateso | Basque | Catalan | Estonian | Galician | German |
Hebrew | Hungarian  | Kinyarwanda | Korean | Nepali | Norwegian | 
Portuguese (both in Portugal and Brazil) | Romanian | Russian |
Turkish | Several versions of English | Several versions of Spanish |

The Jacobs Foundation

The project is supported by the Jacobs Foundation . The Jacobs Foundation is active worldwide in promoting child and youth development. It was founded in Zurich by entrepreneur Klaus J. Jacobs in 1989.